温度对虎斑乌贼受精卵孵化及幼体存活的影响

Effects of Water Temperature on Fertilized Egg Hatch and Larvae Survival of Sepia pharaonis

研究海水温度对虎斑乌贼（Sepia pharaonis）受精卵孵化及幼体存活的影响。结果表明：虎斑乌贼胚胎发育的最低和最高临界水温为20℃和32℃,孵化的最适温度范围为24~30℃。水温[t（℃）]与孵化率[H（%）]间的函数关系可表示为：H=-5.333＋2.583 t（R2=0.247,F=7.213,P〈0.01）;虎斑乌贼幼体对温度的耐受力最低和最高临界温度分别为12和32℃,存活最适温度范围为22~28℃。温度[T（℃）]和处理时间[t（h）]及其交互作用均对虎斑乌贼的存活率[S（%）]有显著的影响（P〈0.01）,其函数关系可表示：S=60.526＋1664 T-0.588 t（R2=0.572,F=39.407,P〈0.01）。

The effects of temperature on fertilized egg hatch and the survival of Sepia pharaonis larvae were studied in this paper.The results show： the maxima and minima limiting temperatures to the embryonic development were estimated at 20 ℃ and 32 ℃,respectively.The optimum ambient temperature for the embryonic development was between 24 ℃ and 30 ℃.The relationship between temperature [ t（℃） ] and the hatch rates [H（%）] can be represented by equation： H =-5.333 ＋ 2.583 t（R2 = 0.247,F = 7.213,P 0.01）.In addition,the maxima and minima limiting ambient temperature to the survival of larvae were 12 ℃ and 32 ℃,respectively,and the most suitable temperature was between 22 ℃ and 28 ℃ The relationship among temperature[T（℃）],time[ t（h）] and the survival rates[S（%） ] can be represented by the equation： S = 60.526 ＋ 1664 T-0.588 T（R 2 = 0.572,F = 39.407,P 0.01）.